New Possibilities to Analyse Non-Standard Explosives and Post Blast Residues in Forensic Practice

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00007064%3AK01__%2F15%3A%230000135" target="_blank" >RIV/00007064:K01__/15:#0000135 - isvavai.cz</a>

Result on the web

<a href="http://spie.org/Publications/Proceedings/Paper/10.1117/12.2183849" target="_blank" >http://spie.org/Publications/Proceedings/Paper/10.1117/12.2183849</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1117/12.2183849" target="_blank" >10.1117/12.2183849</a>

Result language

angličtina

Original language name

New Possibilities to Analyse Non-Standard Explosives and Post Blast Residues in Forensic Practice

Original language description

Nonstandard and home-made explosives always pose a considerable threat for security forces in terms of their practically unlimited variability, both in composition and in construction of explosive devises. Electron microscopy – SEM with EDS/WDS is one of the key techniques for an analysis of non-standard explosives and post-blast residues. If the amount of materials allows it, a number of other analytical techniques are utilized, such as XRD that is capable of a direct phase identification of a crystalline substance, namely in mixtures. TLC has constantly proved itself useful for laboratory screening. Furthermore, combinations of FTIR, Raman spectrometry, LC MS, GC MS, XRF, micro XRF and other ones are applied. In the case of identification of post-blast residues, where an investigation is often conducted at the level of separate microscopic particles, the role of SEM is unsubstitutable, whereas the analysis of the organic phase from these often sporadic microparticles has been infeasible until recently. One of the very interesting options appears to be Raman spectrometry technique, which is nowadays obtainable as a supplement to SEM EDX. Newly available is the device that is fully confocal, SEM keeps full functionality and scan range, very high resolution (for green laser resolution 360nm FWHM; 430nm Rayleigh), it is fitted with high quality objective lens, enhances mapping through Raman spectrometry in a volume 250μm x 250μm x 250μm by piezo driven scanner (capacitive feedback linearized) and obtaining a high quality white light image (250μm x 250μm) immediately in the SEM chamber. This technique is currently undergoing intensive testing and it seems that the method could significantly help to address issues with the analysis of organic phases in electron microscopy not only in the case of post-blast residues and explosives.

Czech name

—

Czech description

—

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

AG - Legal sciences

OECD FORD branch

—

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2015

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

ADVANCED ENVIRONMENTAL, CHEMICAL, AND BIOLOGICAL SENSING TECHNOLOGIES XII

ISSN

0277-786X

e-ISSN

—

Volume of the periodical

9486

Issue of the periodical within the volume

0277-786X/15

Country of publishing house

US - UNITED STATES

Number of pages

11

Pages from-to

948614-1 - 948614-11

UT code for WoS article

—

EID of the result in the Scopus database

—